System.Data.SQLite
Changes On Branch tkt-3c00ec5b52
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Changes In Branch tkt-3c00ec5b52 Excluding Merge-Ins

This is equivalent to a diff from 32f6c0410c to b48e7cb883

2014-05-30
23:25
Add DetectTextAffinity and DetectStringType connection flags to enable automatic detection of column types, when necessary. Pursuant to [3c00ec5b52]. check-in: 58e932f761 user: mistachkin tags: trunk
2014-05-27
18:43
Expose the 'Uri' and 'FullUri' properties in the design-time dialogs. check-in: 96e1f973fa user: mistachkin tags: trunk
18:35
Merge updates from trunk. Closed-Leaf check-in: b48e7cb883 user: mistachkin tags: tkt-3c00ec5b52
18:34
Rename the script used for testing builds for Windows CE 200x. check-in: 32f6c0410c user: mistachkin tags: trunk
05:56
Add DetectStringType connection flag. check-in: 229927cfce user: mistachkin tags: tkt-3c00ec5b52
05:33
Revise how the SQLiteLog class is used in the default debug builds (i.e. when INTEROP_LOG is enabled). check-in: 1affdac144 user: mistachkin tags: trunk

Changes to Doc/Extra/Provider/version.html.

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    <div id="mainBody">
    <h1 class="heading">Version History</h1>
    <p><b>1.0.93.0 - June XX, 2014 <font color="red">(release scheduled)</font></b></p>
    <ul>
      <li>Updated to <a href="http://www.sqlite.org/releaselog/3_8_4_3.html">SQLite 3.8.4.3</a>.</li>
      <li>Add support for mapping transaction isolation levels to their legacy default values. Pursuant to <a href="http://system.data.sqlite.org/index.html/info/56b42d99c1">[56b42d99c1]</a>.</li>
      <li>Add support for setting the default DbType and type name used for mappings on a per-connection basis. Pursuant to <a href="http://system.data.sqlite.org/index.html/info/3c00ec5b52">[3c00ec5b52]</a>.</li>

      <li>Add SetChunkSize method to the SQLiteConnection class. Pursuant to [d1c008fa0a].</li>
      <li>Make the ISQLiteSchemaExtensions interface public.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Have the SQLiteProviderFactory class (in the System.Data.SQLite.Linq assembly) implement the IServiceProvider interface.</li>
      <li>Fix bug in documentation generator automation that prevented some internal documentation links from working.</li>
    </ul>
    <p><b>1.0.92.0 - March 19, 2014</p>
    <ul>







>







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    <div id="mainBody">
    <h1 class="heading">Version History</h1>
    <p><b>1.0.93.0 - June XX, 2014 <font color="red">(release scheduled)</font></b></p>
    <ul>
      <li>Updated to <a href="http://www.sqlite.org/releaselog/3_8_4_3.html">SQLite 3.8.4.3</a>.</li>
      <li>Add support for mapping transaction isolation levels to their legacy default values. Pursuant to <a href="http://system.data.sqlite.org/index.html/info/56b42d99c1">[56b42d99c1]</a>.</li>
      <li>Add support for setting the default DbType and type name used for mappings on a per-connection basis. Pursuant to <a href="http://system.data.sqlite.org/index.html/info/3c00ec5b52">[3c00ec5b52]</a>.</li>
      <li>Add DetectTextAffinity and DetectStringType connection flags to enable automatic detection of column types, when necessary. Pursuant to <a href="http://system.data.sqlite.org/index.html/info/3c00ec5b52">[3c00ec5b52]</a>.</li>
      <li>Add SetChunkSize method to the SQLiteConnection class. Pursuant to [d1c008fa0a].</li>
      <li>Make the ISQLiteSchemaExtensions interface public.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Have the SQLiteProviderFactory class (in the System.Data.SQLite.Linq assembly) implement the IServiceProvider interface.</li>
      <li>Fix bug in documentation generator automation that prevented some internal documentation links from working.</li>
    </ul>
    <p><b>1.0.92.0 - March 19, 2014</p>
    <ul>

Changes to System.Data.SQLite/SQLiteBase.cs.

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      /// <summary>
      /// Enable mapping of unsupported transaction isolation levels to the
      /// closest supported transaction isolation level.
      /// </summary>
      MapIsolationLevels = 0x1000000,





















      /// <summary>
      /// When binding parameter values or returning column values, always
      /// treat them as though they were plain text (i.e. no numeric,
      /// date/time, or other conversions should be attempted).
      /// </summary>
      BindAndGetAllAsText = BindAllAsText | GetAllAsText,








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      /// <summary>
      /// Enable mapping of unsupported transaction isolation levels to the
      /// closest supported transaction isolation level.
      /// </summary>
      MapIsolationLevels = 0x1000000,

      /// <summary>
      /// When returning column values, attempt to detect the affinity of
      /// textual values by checking if they fully conform to those of the
      /// <see cref="TypeAffinity.Null" />,
      /// <see cref="TypeAffinity.Int64" />,
      /// <see cref="TypeAffinity.Double" />,
      /// or <see cref="TypeAffinity.DateTime" /> types.
      /// </summary>
      DetectTextAffinity = 0x2000000,

      /// <summary>
      /// When returning column values, attempt to detect the type of
      /// string values by checking if they fully conform to those of
      /// the <see cref="TypeAffinity.Null" />,
      /// <see cref="TypeAffinity.Int64" />,
      /// <see cref="TypeAffinity.Double" />,
      /// or <see cref="TypeAffinity.DateTime" /> types.
      /// </summary>
      DetectStringType = 0x4000000,

      /// <summary>
      /// When binding parameter values or returning column values, always
      /// treat them as though they were plain text (i.e. no numeric,
      /// date/time, or other conversions should be attempted).
      /// </summary>
      BindAndGetAllAsText = BindAllAsText | GetAllAsText,

Changes to System.Data.SQLite/SQLiteConvert.cs.

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            new SQLiteDbTypeMapping("UNSIGNEDINTEGER64", DbType.UInt64, false),
            new SQLiteDbTypeMapping("VARBINARY", DbType.Binary, false),
            new SQLiteDbTypeMapping("VARCHAR", DbType.AnsiString, true),
            new SQLiteDbTypeMapping("VARCHAR2", DbType.AnsiString, false),
            new SQLiteDbTypeMapping("YESNO", DbType.Boolean, false)
        });
    }



























    /// <summary>
    /// Determines the default <see cref="DbType" /> value to be used when a
    /// per-connection value is not available.
    /// </summary>
    /// <returns>
    /// The default <see cref="DbType" /> value to use.
................................................................................
            typeof(DbType), value, true);

        if (!(enumValue is DbType))
            return FallbackDefaultDbType;

        return (DbType)enumValue;
    }














































































































































    /// <summary>
    /// For a given type name, return a closest-match .NET type
    /// </summary>
    /// <param name="connection">The connection context for custom type mappings, if any.</param>
    /// <param name="name">The name of the type to match</param>
    /// <param name="flags">The flags associated with the parent connection object.</param>







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            new SQLiteDbTypeMapping("UNSIGNEDINTEGER64", DbType.UInt64, false),
            new SQLiteDbTypeMapping("VARBINARY", DbType.Binary, false),
            new SQLiteDbTypeMapping("VARCHAR", DbType.AnsiString, true),
            new SQLiteDbTypeMapping("VARCHAR2", DbType.AnsiString, false),
            new SQLiteDbTypeMapping("YESNO", DbType.Boolean, false)
        });
    }

    /// <summary>
    /// Determines if a database type is considered to be a string.
    /// </summary>
    /// <param name="type">
    /// The database type to check.
    /// </param>
    /// <returns>
    /// Non-zero if the database type is considered to be a string, zero
    /// otherwise.
    /// </returns>
    internal static bool IsStringDbType(
        DbType type
        )
    {
        switch (type)
        {
            case DbType.AnsiString:
            case DbType.String:
            case DbType.AnsiStringFixedLength:
            case DbType.StringFixedLength:
                return true;
            default:
                return false;
        }
    }

    /// <summary>
    /// Determines the default <see cref="DbType" /> value to be used when a
    /// per-connection value is not available.
    /// </summary>
    /// <returns>
    /// The default <see cref="DbType" /> value to use.
................................................................................
            typeof(DbType), value, true);

        if (!(enumValue is DbType))
            return FallbackDefaultDbType;

        return (DbType)enumValue;
    }

    /// <summary>
    /// Determines if the specified textual value appears to be a
    /// <see cref="DBNull" /> value.
    /// </summary>
    /// <param name="text">
    /// The textual value to inspect.
    /// </param>
    /// <returns>
    /// Non-zero if the text looks like a <see cref="DBNull" /> value,
    /// zero otherwise.
    /// </returns>
    internal static bool LooksLikeNull(
        string text
        )
    {
        return (text == null);
    }

    /// <summary>
    /// Determines if the specified textual value appears to be an
    /// <see cref="Int64" /> value.
    /// </summary>
    /// <param name="text">
    /// The textual value to inspect.
    /// </param>
    /// <returns>
    /// Non-zero if the text looks like an <see cref="Int64" /> value,
    /// zero otherwise.
    /// </returns>
    internal static bool LooksLikeInt64(
        string text
        )
    {
        long longValue;

#if !PLATFORM_COMPACTFRAMEWORK
        if (!long.TryParse(
                text, NumberStyles.Integer, CultureInfo.InvariantCulture,
                out longValue))
        {
            return false;
        }
#else
        try
        {
            longValue = long.Parse(
                text, NumberStyles.Integer, CultureInfo.InvariantCulture);
        }
        catch
        {
            return false;
        }
#endif

        return String.Equals(
            longValue.ToString(CultureInfo.InvariantCulture), text,
            StringComparison.Ordinal);
    }

    /// <summary>
    /// Determines if the specified textual value appears to be a
    /// <see cref="Double" /> value.
    /// </summary>
    /// <param name="text">
    /// The textual value to inspect.
    /// </param>
    /// <returns>
    /// Non-zero if the text looks like a <see cref="Double" /> value,
    /// zero otherwise.
    /// </returns>
    internal static bool LooksLikeDouble(
        string text
        )
    {
        double doubleValue;

#if !PLATFORM_COMPACTFRAMEWORK
        if (!double.TryParse(
                text, NumberStyles.Float | NumberStyles.AllowThousands,
                CultureInfo.InvariantCulture, out doubleValue))
        {
            return false;
        }
#else
        try
        {
            doubleValue = double.Parse(text, CultureInfo.InvariantCulture);
        }
        catch
        {
            return false;
        }
#endif

        return String.Equals(
            doubleValue.ToString(CultureInfo.InvariantCulture), text,
            StringComparison.Ordinal);
    }

    /// <summary>
    /// Determines if the specified textual value appears to be a
    /// <see cref="DateTime" /> value.
    /// </summary>
    /// <param name="convert">
    /// The <see cref="SQLiteConvert" /> object instance configured with
    /// the chosen <see cref="DateTime" /> format.
    /// </param>
    /// <param name="text">
    /// The textual value to inspect.
    /// </param>
    /// <returns>
    /// Non-zero if the text looks like a <see cref="DateTime" /> in the
    /// configured format, zero otherwise.
    /// </returns>
    internal static bool LooksLikeDateTime(
        SQLiteConvert convert,
        string text
        )
    {
        if (convert == null)
            return false;

        try
        {
            DateTime dateTimeValue = convert.ToDateTime(text);

            if (String.Equals(
                    convert.ToString(dateTimeValue),
                    text, StringComparison.Ordinal))
            {
                return true;
            }
        }
        catch
        {
            // do nothing.
        }

        return false;
    }

    /// <summary>
    /// For a given type name, return a closest-match .NET type
    /// </summary>
    /// <param name="connection">The connection context for custom type mappings, if any.</param>
    /// <param name="name">The name of the type to match</param>
    /// <param name="flags">The flags associated with the parent connection object.</param>

Changes to System.Data.SQLite/SQLiteDataReader.cs.

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          if (arSize.Length > 1)
          {
            dataType = arSize[0];
            arSize = arSize[1].Split(')');
            if (arSize.Length > 1)
            {
              arSize = arSize[0].Split(',', '.');
              if (sqlType.Type == DbType.AnsiString || sqlType.Type == DbType.Binary ||
                  sqlType.Type == DbType.String || sqlType.Type == DbType.AnsiStringFixedLength ||
                  sqlType.Type == DbType.StringFixedLength)
              {
                row[SchemaTableColumn.ColumnSize] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture);
              }
              else
              {
                row[SchemaTableColumn.NumericPrecision] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture);
                if (arSize.Length > 1)
................................................................................
      CheckValidRow();

      if (i >= VisibleFieldCount && _keyInfo != null)
        return _keyInfo.GetValue(i - VisibleFieldCount);

      SQLiteConnectionFlags flags = SQLiteCommand.GetFlags(_command);
      SQLiteType typ = GetSQLiteType(flags, i);














      return _activeStatement._sql.GetValue(_activeStatement, flags, i, typ);
    }

    /// <summary>
    /// Retreives the values of multiple columns, up to the size of the supplied array
    /// </summary>
................................................................................
        catch (ObjectDisposedException)
        {
            // do nothing.
        }

        return SQLiteConnectionFlags.Default;
    }




































    /// <summary>
    /// Retrieves the SQLiteType for a given column, and caches it to avoid repetetive interop calls.
    /// </summary>
    /// <param name="flags">The flags associated with the parent connection object.</param>
    /// <param name="i">The index of the column to retrieve</param>
    /// <returns>A SQLiteType structure</returns>







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          if (arSize.Length > 1)
          {
            dataType = arSize[0];
            arSize = arSize[1].Split(')');
            if (arSize.Length > 1)
            {
              arSize = arSize[0].Split(',', '.');
              if (sqlType.Type == DbType.Binary || SQLiteConvert.IsStringDbType(sqlType.Type))


              {
                row[SchemaTableColumn.ColumnSize] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture);
              }
              else
              {
                row[SchemaTableColumn.NumericPrecision] = Convert.ToInt32(arSize[0], CultureInfo.InvariantCulture);
                if (arSize.Length > 1)
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      CheckValidRow();

      if (i >= VisibleFieldCount && _keyInfo != null)
        return _keyInfo.GetValue(i - VisibleFieldCount);

      SQLiteConnectionFlags flags = SQLiteCommand.GetFlags(_command);
      SQLiteType typ = GetSQLiteType(flags, i);

      if (((flags & SQLiteConnectionFlags.DetectTextAffinity) == SQLiteConnectionFlags.DetectTextAffinity) &&
          ((typ == null) || (typ.Affinity == TypeAffinity.Text)))
      {
          typ = GetSQLiteType(
              typ, _activeStatement._sql.GetText(_activeStatement, i));
      }
      else if (((flags & SQLiteConnectionFlags.DetectStringType) == SQLiteConnectionFlags.DetectStringType) &&
          ((typ == null) || SQLiteConvert.IsStringDbType(typ.Type)))
      {
          typ = GetSQLiteType(
              typ, _activeStatement._sql.GetText(_activeStatement, i));
      }

      return _activeStatement._sql.GetValue(_activeStatement, flags, i, typ);
    }

    /// <summary>
    /// Retreives the values of multiple columns, up to the size of the supplied array
    /// </summary>
................................................................................
        catch (ObjectDisposedException)
        {
            // do nothing.
        }

        return SQLiteConnectionFlags.Default;
    }

    /// <summary>
    /// Retrieves the SQLiteType for a given column and row value.
    /// </summary>
    /// <param name="oldType">
    /// The original SQLiteType structure, based only on the column.
    /// </param>
    /// <param name="text">
    /// The textual value of the column for a given row.
    /// </param>
    /// <returns>
    /// The SQLiteType structure.
    /// </returns>
    private SQLiteType GetSQLiteType(
        SQLiteType oldType, /* PASS-THROUGH */
        string text
        )
    {
        if (SQLiteConvert.LooksLikeNull(text))
            return new SQLiteType(TypeAffinity.Null, DbType.Object);

        if (SQLiteConvert.LooksLikeInt64(text))
            return new SQLiteType(TypeAffinity.Int64, DbType.Int64);

        if (SQLiteConvert.LooksLikeDouble(text))
            return new SQLiteType(TypeAffinity.Double, DbType.Double);

        if ((_activeStatement != null) &&
            SQLiteConvert.LooksLikeDateTime(_activeStatement._sql, text))
        {
            return new SQLiteType(TypeAffinity.DateTime, DbType.DateTime);
        }

        return oldType;
    }

    /// <summary>
    /// Retrieves the SQLiteType for a given column, and caches it to avoid repetetive interop calls.
    /// </summary>
    /// <param name="flags">The flags associated with the parent connection object.</param>
    /// <param name="i">The index of the column to retrieve</param>
    /// <returns>A SQLiteType structure</returns>

Changes to readme.htm.

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<p>
    <b>1.0.93.0 - June XX, 2014 <font color="red">(release scheduled)</font></b>
</p>
<ul>
    <li>Updated to <a href="http://www.sqlite.org/releaselog/3_8_4_3.html">SQLite 3.8.4.3</a>.</li>
    <li>Add support for mapping transaction isolation levels to their legacy default values. Pursuant to [56b42d99c1].</li>
    <li>Add support for setting the default DbType and type name used for mappings on a per-connection basis. Pursuant to [3c00ec5b52].</li>

    <li>Add SetChunkSize method to the SQLiteConnection class. Pursuant to [d1c008fa0a].</li>
    <li>Make the ISQLiteSchemaExtensions interface public.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Have the SQLiteProviderFactory class (in the System.Data.SQLite.Linq assembly) implement the IServiceProvider interface.</li>
    <li>Fix bug in documentation generator automation that prevented some internal documentation links from working.</li>
</ul>
<p>
    <b>1.0.92.0 - March 19, 2014</b>







>







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<p>
    <b>1.0.93.0 - June XX, 2014 <font color="red">(release scheduled)</font></b>
</p>
<ul>
    <li>Updated to <a href="http://www.sqlite.org/releaselog/3_8_4_3.html">SQLite 3.8.4.3</a>.</li>
    <li>Add support for mapping transaction isolation levels to their legacy default values. Pursuant to [56b42d99c1].</li>
    <li>Add support for setting the default DbType and type name used for mappings on a per-connection basis. Pursuant to [3c00ec5b52].</li>
    <li>Add DetectTextAffinity and DetectStringType connection flags to enable automatic detection of column types, when necessary. Pursuant to [3c00ec5b52].</li>
    <li>Add SetChunkSize method to the SQLiteConnection class. Pursuant to [d1c008fa0a].</li>
    <li>Make the ISQLiteSchemaExtensions interface public.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Have the SQLiteProviderFactory class (in the System.Data.SQLite.Linq assembly) implement the IServiceProvider interface.</li>
    <li>Fix bug in documentation generator automation that prevented some internal documentation links from working.</li>
</ul>
<p>
    <b>1.0.92.0 - March 19, 2014</b>

Changes to www/news.wiki.

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<p>
    <b>1.0.93.0 - June XX, 2014 <font color="red">(release scheduled)</font></b>
</p>
<ul>
    <li>Updated to <a href="http://www.sqlite.org/releaselog/3_8_4_3.html">SQLite 3.8.4.3</a>.</li>
    <li>Add support for mapping transaction isolation levels to their legacy default values. Pursuant to [56b42d99c1].</li>
    <li>Add support for setting the default DbType and type name used for mappings on a per-connection basis. Pursuant to [3c00ec5b52].</li>

    <li>Add SetChunkSize method to the SQLiteConnection class. Pursuant to [d1c008fa0a].</li>
    <li>Make the ISQLiteSchemaExtensions interface public.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Have the SQLiteProviderFactory class (in the System.Data.SQLite.Linq assembly) implement the IServiceProvider interface.</li>
    <li>Fix bug in documentation generator automation that prevented some internal documentation links from working.</li>
</ul>
<p>
    <b>1.0.92.0 - March 19, 2014</b>







>







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<p>
    <b>1.0.93.0 - June XX, 2014 <font color="red">(release scheduled)</font></b>
</p>
<ul>
    <li>Updated to <a href="http://www.sqlite.org/releaselog/3_8_4_3.html">SQLite 3.8.4.3</a>.</li>
    <li>Add support for mapping transaction isolation levels to their legacy default values. Pursuant to [56b42d99c1].</li>
    <li>Add support for setting the default DbType and type name used for mappings on a per-connection basis. Pursuant to [3c00ec5b52].</li>
    <li>Add DetectTextAffinity and DetectStringType connection flags to enable automatic detection of column types, when necessary. Pursuant to [3c00ec5b52].</li>
    <li>Add SetChunkSize method to the SQLiteConnection class. Pursuant to [d1c008fa0a].</li>
    <li>Make the ISQLiteSchemaExtensions interface public.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Have the SQLiteProviderFactory class (in the System.Data.SQLite.Linq assembly) implement the IServiceProvider interface.</li>
    <li>Fix bug in documentation generator automation that prevented some internal documentation links from working.</li>
</ul>
<p>
    <b>1.0.92.0 - March 19, 2014</b>